Driving mechanism.



E. R. WHITNEY.

DRIVHJG MECHANISM.

APPHCATlOH FILED APR. 24, 1913.

1,1U'1: 9,1Q6. PatPnfedAug. 8, 1%}.

4 SHEETSSHEET I.

E. R. WHITNEY.

DRIVING MECHANISM.

APPLlCATION FILED APR.24, 1913.

1,14:9,1 O69 Patented Aug. 3, 1915.

4 SHEETSSHEET 2.

EJR. WHHNEY.

DRIVING MECHANJSM.

APPLICATION FILED APR.24\ 1913.

1 ,1 49, 1 O6 Patented Aug. 8, 1915.

E. R. WHITNEY.

DRIVING MECHAMSM.

APPLICATION mm APR.24, 1913.

1,149,10 mmmu 3, 1915 4SHEETSSHEET 4.

.Said motor also has an armature lLlNIl ED cannon,

EDDY E. WHITNEY, SF PHILADELPHIA, PENNSYLVANIA, fs-SSIGNOB 'IQ GOMMEECZEQL TRUCK CDMEAN'Y OF AMERICA, OF PHILADELPHIA, PENNSYLVJENIA, A. CORFEUH' TION on rnrmsYLvAnm.

DRIVING IJIEGZ-IJLI ISL'I.

Original application filed Jane Serial T0 (ZZZ 'w/wni. it may concern:

Be itlmown that 1, lion ll. lVnrr'snr a citizen of the United States, ding Philadelphia, Pennsylvania, have invented certain Improvements in Driving chanism, (bein a division of my application for patent nled June 51-, 1912, Serial No. 701,005,) of which the following is iication.

One object of my invention is to provide a novel combination of driving mechanism and inclosing structure particularly adapt ed for use between a dri ing motor driven wheel, the arrangement and construction of parts being such than the said mechanism is completely inclosed so as to be dust proof.

It is further desired to provide a novel form of inclosing casing and wheel supper ing structure particularly designed to house certain gearing, the arrangement of parts being such that there is no sliding joint helween two or more parts of the; casing through which dust might gain access to the mechanism in the interior thereof.

It is further desired to provide mechanism having the above noted characteristics which shall be relatively simple, conigact and substantial.

These objects and other advantageous ends I secure as hereinafter set forth, relerence being had to the accompanying dravw inns, in which Figure 1 is an elevatioii partly in section, illustrating my invention as construe? ed. to transmit power from a motor to the axle driven thereby; 2 is a section on the line aa, Fig. 1; Fi 3 is a side eleva tion, partly in section, illustrating a slightly modified form of my invention, Fig. 4.- is a vertical section on the line Z L Fig. 3, and Fig". 5 is a vertical section of another for of my invention.

In Figs. 1 and 2 of the above drawings, 1 have illustrated an electric motor having a easing 2 closed at one end by a head 3 ""1 15 carried at the end thereof distant more the head 3 by a bearing 5, and at the opnosite end extended through said head so as to carry outside of it a pinion 6 and a grooved bearing Wheel or roller Said pinion and rollerare preferably integral and it is to he Specification of Letters Patent.

Patented Au 3, illlllfiu il ivided and. this application filed April 24,

not .d that the dia' ieters of the bottom of the cave of the said roller and oi the pitch circle of the pinion are the same. Elie mm tor he d has in outer face a cylindr' depression or recess whose curved surface designed to receive three or more rollers 5, each of which forms part of a gear 9 and. engages the roller 7 on the armature shaft 4 so as to support the same. The motor head 3 is held to the motor casing 2 in the present instance by screws of which one is shown at 10, and there is bolted to said head a. second asing ll providing a hcari H 12 0 1'3, concentric with-the mm: are That portion of the said shaft 13 projecting outside of the hearing has in t -is instance tapered part 14: and a threaded extremity for a nut. inside the casing ll 1e axle or driven shaft 13 has three indition there is fixedly mounted Within the casing 11., an internally toothed 18, in on to be engaged by the various gears 'ch before noted also engage the armature pinion This internal gear is so proport: d that its pitch circle has the. no diameter as that of the cylindrical bearing 19, of the head Under operating conditions the turning of the armature sh: if under he action of the motor drives the ion and roller l, thereby causing the 5, c 9 to roll upon. the internal gear 18 and through arms 16 rotating the shaft 13 with the member which may be connected to it. lVith this arrangement it will be noted that the pinion carrying end of the armatmfe shaft is supported through the rollers S of the gears 9 on the curved bearing surface 19 of the motor head, which with the rollers S and 7 is suitably hardened or made ofliard material to rcdu o the wear to a minimum. Owing to the grooved form of the rollers 7 and to the corresponding form of the rollers 8, transverse motion of the gears 9 relative to the gear 18 is eilectually prevented and said rollers are also retained in their proper n 'ons relatively to the curved hearing suriaco 19: it being" noted that under normal conditions the sides of the groove in said roller '7 do not engage the sides of the rollers 8 Viith this construction, the

tional loss between the various parts is reduced to a minimum, since the bearing surface 19 ofthe head 3 has the same diameter as the pitch cit-di of the internal gear 18, while the diameters of the rollers 8 are the same as an, of the pitch circles of the gears 9.

In some instances, I may iirrange the parts as shown in Fi s. 3 and d, in which case the motor head 3" has a bearing 20 for the pinion end of the armature shaft P. Said motor 11 aid as before, is provided with a recess providing a cylindrical bearing surface 19 engaged by rollers 8 formed integral with the gears 9, which as before, are carried on studs 17* projecting from arms 16 formed integral with or connected to a rotary shaft 13. In this case, however, each of the studs or spindles 11' has mounted on it a second gear 21, formed integral with a gear 9 and a roller 8; the arrangement being such that said gears 21 roll on the internally toothed gear 18*, which as before is mounted within a casing 11 and attached to the motor casing in any suitable manner. Said casing however, is provided with a tubular extension fitting into the hub 22 of the wheel 23 and the shaft 13, which extends loosely through this tubular extension 24, is connected with the hub so as to turn the same by means of a hub ca 25 and coupling ring 26. Two sets of rol er bearings 27 and 28 are mounted between the easing extension 24- and the wheel hub, and the wheel and motor structures are connected to the frame of the vehicle through a spring structure 29.xvhich engages the top part of the casing 11 With this arrangement of parts, the revolution of the armature shaft 4 turns the gears 9 and causes the gears 21 attached thereto to roll around upon the internal gear 18 whose pitch circle has the same diameter the bearing surface 19 of the motor head 3;the rolls 8 being the- While the bearing surface 19 in the recess of the head 3 is properly cylindrical in form Fig. 3, is provided with a hollow projection 2 adapted to form a hollow wheel axle.

I claim l. The combination of a casing including a head closing the same and having a roller bearing surface; an. internally toothed gear fixed within said casing; with mechanism cooperating with said gear and including a roller operative on said bearing surface.

2. The combination of a gear casing including a head closing the same and having a cylindrical bearing surface; an internally toothed gear fixed within said. casing in i such position that its pitch line has the same diameter as said bearing surface; with mechanism cooperating with said gear and the bearing surface.

3. The combination of a gear casing including a. removable head having a roller bearing surface; and an internally toothed gear mounted within the casing having its pitch line in the cylindrical surface, including the roller bearingsurface, with mechanism cooperating with said gear and hearing surface.

l. The combination of a gear casing having a supporting journal; an internally toothed gear fixed within the casingconcentric with the center line of the journal; and a roller bearing surface also within the casing concentric with said gear.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

EDDY R. WHITNEY.

Witnesses:

WILLIAM E. BRADLEY, Jos. H. KLEIN. 

